Drying tumbler



E. l. CUTTER. DRYING TUMBLER.

APPLICATION FILED APR. 23, I920.

1,424,994, Patented Aug. 8, 1922.

3 SHEETS-SHEET I- E. I. CUTTER.

DRYING TUMBLER.

APPLICATION FILED APR.23, 1920.

Patented Aug. 8, 1922.

3 SHEETS-SHEET 2.

[NI 'liV TOR .-1 TIN/ X11113 E. I. CUTTER.

DRYING TUMBLER.

APPLICATION FILED APR. 23, 1920.

1,42%,9SM. at t d Aug- 8, 1922.

3 SHEETSSHEET 3.

0 O Y O fig? 5d a; 24 J2 J2 pair ears rrsar oasis.

EDMUND I. CUTTER, 0F CINCINNATI, OHIO, ASSIGNOR TO THE AMERICAN LAUNDRY MACHINERY COMPANY, OF NORWOOD, OHIO, A CORPORATION OF OHIO.

DRYING TUNE LEE.

Application'filed April 23, 1920. Serial No. 376,136.

included in or excluded from the circuit of the air through the machine by a single operation of the mechanism which controls the passage-ways between the several chambers.

This type of machine generally includes an air chamber, a heating chamber, and a drying chamber with communicating passage-ways between the several chambers. The air and blower chamber communicate with the outside atmosphere whereby fresh air may be drawn into the machine casing by the action of the fan, and the warm air expelled through an outlet in the machine casing after it has been passed through the drying chamber; During the 'operatlon of drying the materials in the tumbler the fresh air from the outside atmosphere is forced through the heating chamber and thence through the drying chamber, and back to the blower from which point it is ex elled in part or in whole to the outside. ut when the dr ing operation has been completed it is desira 1e to cool the materials in'the drying tumbler preparatory to their removal there-- from, and this is done by circulating the fresh outside air through the drying chamber without being heated. This is done by cutting out the heating chamber from the oil'- cuit of the air through the machine, and the applicant has devised a convenient arrangement of doors or dampers which control the passage-ways bet-ween'the several chambers, together with a single'operating mechanism for controlling the positions of these several dampers. By means of applicants device he is enabled to establish either one or the other of the two .circuits of air just referred'to by a single operation. That is to say, he can so set the dampers by a single operation that the air will be forced from the outside atmosphere through the heating chamber, thence through the drying chamber and back to the Specification of Letters Patent. P t nted Aug. 8, 1922.

blower chamber. Or,by a single operation he can establish direct communication be--- tween the outside atmosphere and the drying chamber, and in turn the blower chamber in which case the heating chamber is altogether excluded from machine.

Other advantages resultingfrom applicants invention will be apparent to those who are familiar with the art, and other structural arrangementswill suggest themselves for carrying outthe invention as herein disclosed.

The structural arrangement embodying applicants invention as repared by him will be understood from the ollowing description and claims when considered in connection with the accompanying drawing:

Fig. 1 is an elevation of the machine casing showing a single operating means for adjusting .the positions of the dampers; Fig. 2 is a transverse section through the machine showing arrangement of the several cham-- bers and the dampers for controlling communication therebetween; Fig. 3 is a sec tional detail view taken on line w--a, Fig. 2:

the circuit of air through the Fig. A: is a sectional detail view takenon line b-b, Fig. 2; Fig. 5 is a sectional detail view taken on line 0c, Fig. 2; Fig. 6 is a horizontal sectional view taken on the plane of line (ii-+03, Fig 2; and Fig. 7 is a sectional view ofpart of the operating mechanism taken-on line e-c, Fig 1.

The lower part of the machine casing 1 constitutes a heating chamber 3, while the upper part of the-casing is divided into a blower chamber 2 and the drying chamber 4.

-The partition wall 43,'wh1ch extends bechamber and the upper-- tween the heat in part of the machine casing, has a passageway 17. provided therein for communication between the heating chamber and the drying chamber. Above onepart of partition 43 there extends a second partition member 24 which serves to separate a fresh air chamber 5 from the main part of air and blower chamber 2. 5 indicates the fresh air 0 ening for fresh air chamber 5. This partition wall 24 is an extension of the partition wall 23 which-extends between the drying chamber and'main part. of air and blower chamber 2., A passage-way is provided between the fresh air chamber 5 and the dryingchamber 4, this passage-way being controlled by the damper 16 which is hingedly mounted upon the shaft 19, and "the damper .15 hingedly mounted upon its shaft 20 controls the passage-way between the fresh air cham y ber and the heating chamber. The passage-way 17' may be closed or, opened by operation of the damper 17 upon its axis 18 which is mounted upon the I-beam 30.

"Damper 17, when occupying closed position,

contacts with shoulder 18 which is formed upon'the end portion of partition 43. A stop 16' is also provided upon partition wall 43 to limit the movement of damper 16 upon being brought toclosed position. v

The air and blower chamber2 encloses a housing 6 fora fan 7, whose operating shaft is 1nd1cated.at 8,'this fan bein adapted to expel the warm air through out et 22 which is provided in the casing-wall of the ma chine. 1 v

The heating chamber encloses the steam co11s9 between which there are provided baffle plates 10 and'spacingrods 11, all of which are mounted u on a truck which is adapted to be removed. mm the heating chamber as a un t through a door at eitherend of the machine casing. This arrangement will be more fully understood from" the detail tion filed of even date and bearing No. 376,135.

The drying chamber encloses a cylindrical description found in companion applicatumbler having aforaminous wall '12 allowing the passageof air therethrough,.a'nd a" door 13 which allows access tothe materials contained therein upon openin door 14 which is provided in themachme' casing.

Baifle members 21 are also provided within the d ying chamber. The drying tumbler, whlch is mounted upon shaft-23, receives its operat1on through gear 24' carried by shaft 23, whlch gear .mesheswithgear 25 upon shaft 26, gear 25 meshing with gear 27v upon the -shaft 28, which shaft recelvesits operation from pulley wheel 29. .Shaft' 28 is supported bybraeket member '31 mounted upon the machme casing. The source of power 1s not here shown, neither is the particular mechanism shown whereby the usual- .ed by asingle operation. Lever arm 45 which is fixedly mounted upon shaft 20 carries clevis 45- which is connected to the flattened face of member 46 which is screwed on rod 47 Another similar member 48 on v the other end of'rod 47 has pivotal connection with-the clevis end 49' on the longer arm of bell crank lever 49, which is mounted at its fulcrum upon shaft 19 of damper 1 6.

rial

A clevis 50 rovided upon the shorter arm of bell era lever 49 has pivotal engagement with the flattened end of member 51 on connecting rod 52, theother end of rod 52 carrying a member 40 with a flattened end portion which has pivotal engagement with clevis 41' on lever arm ll mounted upon shaft 18 of damper 17. Substantially midway of the length of connecting rod 52 there is mounted a swivel block 53 which has swivel connection with one end of a lever arm 32 which is mounted at 33 in the side wall of the machine casin Lever arm 32 is pivotally connected at 3 with one end of an operating rod, part of which is-screw threaded as shown at 37. Screw thread engagement is had between this operating rod and the swivel nut 36 pivotally mounted at 42 in the side wall of the machine casing, a set screw 44 being provided for securing this nut in the position to which it is-adjusted.

Stops 35 and 38 are provided upon the operating rod, the distance between these two stops corresponding to the extent of adjustment which is necessary in-order to change the several dampers from one position to another. That is to say, when the operatin rod has been manipulated by means 0 wheel 39 until stop 35 is broughtto bear. against nut 36, the damper 16 will be opened while dampers. 15- and 17 will be closed, thereby excluding the heating chamher from the circuit of air thro'u h the machine. When stop 38 is broug t' to bear against nut 36 the reverse condition is established. That is to say, the heating cham-v bet is included in the circuit of air through the machine by virtue of the tact that damper 16 is closed and the other two 'dampers15 and 17 are open. Thus by simply operating manipulating hand wheel 39 to bring, the operating rod into either one or the other of these two positions, the

circuit of air through the machine can be changed as desired, 'the materials in the tumbler are 1n the epending upon whether process of being dried, or whether-it is desired to cool the materials after thedrying process preparatory to their removal from themachine.

what I claim is:

1. In adrying machine, the combination of an. air and blower chambenaheating chamber, a drying chamber, said several "chambers. having communicating passage- 'ways therebetween, means for forcing air through said chambers, dampers for controlling the passage-ways between said several chambers,'and a single operating means for adjusting the positions ofsaid several.

dampers 'whereby communication can be established between all or only some of said chambers. U

2.- In a dryingmachine, the combination ot a blower and air chamber, a heating we I chamber, a drying chamber, said several chambers having communicating passageways therebetween, means for forcing air through said machine, dampers for passageways between said severalchambers,,and a single operating means. for controlling the positions of said dampers whereby the heating chamber can be either included in or shut off from the circuit of air through the machine.

3. In a drying machine, the combinationv of a blower and air chamber, a heating chamber, a drying chamber, said several chambers having communicating passageways therebetween, means for forcing air through said machine, dampers for passage ways between the air and drying chambers, the air and heating chambers, the heating and drying chambers respectively, and a single operating means for closing the first named damper and opening the other two dampers, or vice versa, whereby the heating chamber can be included in or excluded from the air circuit through the machine.

4. In a drying machine, the combination of a blower and air chamber, a heating chamber, a drying chamber, said several chambers having communicating passages therebetween, means for forcing air through said machine, hingedly mounted dampers for the passage-ways between-said several chambers, and a single operating means for adjusting the positions of said dampers,

tween the hinge shafts of the said several dampers whereby the adjustment 'of one of said dampers will effect corresponding adjustment of the other of said dampers;

6. In a drying machine, the combination of a' blower and air chamber, a heating chamber, a drying chamber, said' several chambers having communicating passageways therebetween, means for forcing air through said machine, hingedly mounted dampers for the passage-ways between the I air and drying chambers, the air and heating chambers, the heating and drying chambersrespectively, and operative connection betweenthe hinge shafts-of said dampers whereby the closing of first named damper will effect the opening of the other two dampers, and vice versa.

7. In a. drying machine, thecombination of a blower and air chamber, a heating chamber, a drying chamber, said several chambers having communication therebetween, means for forcing air through said machine, hingedly'mounted dampers for the passage-ways between the air and drying chambers, the air and heating chambers, the

heating and drying chambers respectively, operative connections between the hinge shafts of said dampers, and an operating member having an operative connection with the said first named operative connections whereby the closing of the first named damper will effect opening of the other two dampers, and vice versa.

'8. In a drying machine, the combination of a blower and air. chamber, a heating chamber, a drying chamber, said several chambers having communicating passageways therebetween, means for forcing air through said machine, hingedly mounted dampers for the passage-ways between the air and drying chambers, the air and heating chambers, the heating and drying chambers, respectively, operative mechanical connections between the hinge shafts of said dampers and an operating member having connection with the first named operative connections at a point between the first and last named dampers. i

9. In a drying machine, the combination of a blower and air chamber, a heating chamber, a drying chamber, said several chambers having communicating passageways there-between, means for forcing air through said machine, dampers for the passages between tlae air and drying chambers, the air and heatingchambers, the drying and heating chambers respectively, and

means for simultaneously closing the first named damper and opening the other two dampers, or vice versa, whereby the heating chamber can be either included in or ex-- cluded from the circuit of air through the machine.

10. In a drying machine, a controlmechanism comprising a bell crank lever with arms of difi'erent lengths, .a rod pivotally connected at one end to the longer arm of the bellcrank lever, a lever arm adapted to be mounted on the shaft of a damper and pivotally connected to the other end of said rod, said bell crank lever being adapted to be mounted at its fulcrum upon the hinge shaftof another damper, a lever arm adapted to be mounted uponthe hinge shaft of a third damper, a connecting rod having its ends pivotally connected'to the free end of said last named lever arm and to the end of the shorter arm of said bell crank lever respectively, said connecting rod having aswivel block mounted substantiallymidway of its length, a straight lever arm adapted to be mounted at its middle point upon the casing of a drying machine, one end of said last named lever armhaving swivel connectlon with said swivel block, a screw threada last named lever, a swivel nut havin "said operating rod corresponding ed operating rod provided with stops at the ends of the screw thread, and having pivotal connection with the other end of said screw thread'engagement with said operating rod and a pivot member formed upon said swivel nut for attachment to the casing of a drying machine, the distance between the stops on to the range of movement of the several dampers in a'drying machine from open to closed positions or vice versa.

11. in a drying machine, the combination of a blower and air chamber, a "heating chamber, a drying chamber, said several chambers having communicatin having a ,door opening to the drying chambar, doors for the passage-ways between said several chambers, and a single operating means forcontrolling the'posltionsof said doors whereby the heating chamber can be eitherinclud'ed in or excluded from the circuit of air through the chamber, said oper--' ating means being operable a point.

near the said casing door.

12. In a drying -machine', a casing, the

lower part of said casing constituting a heatin chamber the upper'part of said casing be iiig'divided into a dryin chamber and an air and blower chamber, t e lower part of ,said last named'chamber bein further partitioned into afresh air cham r,.said fresh air chamber having a communicating paspassage-' ways therebetween, ,means for" orclng air naaaeee pivoted upon horizontal axes for control of.

the said several. passage-ways.

13,. In a drying machine, a casing, the

lower part of said casing constitutin a heata in chamber, the upperpart of sai casing bemg divided into a drying chamber and an air and blower chambensaidcasing bein also provided with a fresh air inlet adapte for communication with' said heating chamber 01% said drying chamber, said heating and v drying chambers being also provided with means of communicatlon, and said drying chamber having communication with saidair and blower chamber, and dampers for control of the said several communicating a means. x v

14. A drying machine'comprising a casing enclosing a heatin chamber in the lower 'iart'thereo'fand rying and fan and air chambers above'said heating chamber, said casing being provided with inlet and outlet openings and means of communication between said openings and chambers for circulation of air therethrough, and dampers for simultaneous control of said communicating means 1 In testimony whereof I afilx m 'si ature. EDMUND I. C UT l ER- 

